All good advice from vets. I will throw in one idea. For me, the biggest advancement in mtb is the 1x drive train. Makes more difference on a single track than almost anything. If you feel like spending some cash, I would convert to either Shimano or SRAM drivetrain. Many will may say it’s too much money to put in an inexpensive bike (which is probably true) but you can transfer this drivetrain to most bikes in the future (and there will be more). The performance change will rock your world and you’ll drop some weight.
just sayin’