No, why do you want to change the device?
You have at hand an Ax lite LTE6, use that.
An Ax lite can be configured as Access Point just fine (of course you need not any firewall on it and the LTE will be disabled/not used).
The issue is only that:
v6.xx used drivers for the local radios that were configured under "wireless".
v7.x (cannot really say which versions, I believe up to 7.12.1, but surely your 7.
used different drivers that were still configured under "witreless" but that are "Wifi Wave2".
newer v7.x (I believe starting 7.13.x) has a big change of drivers, they are not anymore inside the main RoS package, so you need the wifi-qcom package and their configuratiion is not anymore under "wireless" but rather under "wifi".
Before or later you will want to update from 7.8 (you cannot downgrade to a version lower than your factory version, likely 7.4 or 7.8 ).
Most if not all the tutorials/complete configurations are for the earlier versions (wireless or wifiwave2 under wireless) so it is more difficult to point you to one complete tested example.
Upgrading is suggested, 7.8 is a pretty much old version.
The upgrade process is in this case a two steps one:
1) upgrade to 7.12.1
2) upgrade to any higher version
You could do just the first step, and use as reference any of the many posts using "/interface wireless" like the mentioned:
viewtopic.php?t=143446#p763654
and reference configuration:
viewtopic.php?t=143446#p763655
for the settings and test the configuration and only later make the second step (rather a jump) and see if the configuration is "translated" correctly by the upgrade process or (I believe it will be needed) you need to tweak/change it under "/interface wifi" (which is the "new standard").
Or you could update to a recent version (the automatic upgrade, once you will have upgraded to 7.12.1 will suggest you the latest "stable"[1] 7.16.2) you might want to do a manual upgrade to a recent but not latest one (i don't think that even if you go for 7.16.2 you will have issues, as your intended configuration is very basic, but there are a lot of reports of issues with ax drivers/radios and many people stay at an older, more tested version, like 7.14.3 or similar).
[1] There are contrasting opinions on what "stable" means, Mikrotik thinks evidently that it means "stable", personally I think that it means what in other softwares would be called (IMHO) "early beta"